Logstash 6.2.2 Fatal error crashing background running logstash when stdout output plugin is used

[LLK]

Hello,

Same issue as with the other user's thread:

Logstash 6.1 Fatal error crashing background running logstash when stdout output plugin is used

Hi Team, I'm getting this error while receiving data via the input plugin if stdout output plugin is used when logstash instance has been put to run in the background. It is not a problem per se as I do not intend to use the stdout plugin when logstash is intended to be run in the background. However I do not recall this happening before so was wondering if this is a "new" thing. [2018-01-08T12:22:44,915][FATAL][logstash.runner ] An unexpected error occurred! {:error=>#<SystemCallError: Unkno…

Running logstash in the background with stdout plugin enabled crashes it:

[2018-03-07T17:18:19,623][FATAL][logstash.runner ] An unexpected error occurred! {:error=>#<SystemCallError: Unknown error (SystemCallError) - >, :backtrace=>["org/jruby/RubyIO.java:1457:in `write'", "org/jruby/RubyIO.java:1428:in `write'", "/app/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-stdout-3.1.3/lib/logstash/outputs/stdout.rb:44:in `block in multi_receive_encoded'", "org/jruby/RubyArray.java:1734:in `each'", "/app/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-stdout-3.1.3/lib/logstash/outputs/stdout.rb:43:in `multi_receive_encoded'", "/app/logstash/logstash-core/lib/logstash/outputs/base.rb:90:in `multi_receive'", "/app/logstash/logstash-core/lib/logstash/output_delegator_strategies/single.rb:15:in `block in multi_receive'", "org/jruby/ext/thread/Mutex.java:148:in `synchronize'", "/app/logstash/logstash-core/lib/logstash/output_delegator_strategies/single.rb:14:in `multi_receive'", "/app/logstash/logstash-core/lib/logstash/output_delegator.rb:49:in `multi_receive'", "/app/logstash/logstash-core/lib/logstash/pipeline.rb:479:in `block in output_batch'", "org/jruby/RubyHash.java:1343:in `each'", "/app/logstash/logstash-core/lib/logstash/pipeline.rb:478:in `output_batch'", "/app/logstash/logstash-core/lib/logstash/pipeline.rb:430:in `worker_loop'", "/app/logstash/logstash-core/lib/logstash/pipeline.rb:385:in `block in start_workers'"]}
[2018-03-07T17:18:19,899][ERROR][org.logstash.Logstash ] java.lang.IllegalStateException: org.jruby.exceptions.RaiseException: (SystemExit) exit
(END)

[2018-03-07T17:18:15,850][FATAL][logstash.runner ] An unexpected error occurred! {:error=>#<SystemCallError: Unknown error (SystemCallError) - >, :backtrace=>["org/jruby/RubyIO.java:1457:in `write'", "org/jruby/RubyIO.java:1428:in `write'", "/app/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-stdout-3.1.3/lib/logstash/outputs/stdout.rb:44:in `block in multi_receive_encoded'", "org/jruby/RubyArray.java:1734:in `each'", "/app/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-stdout-3.1.3/lib/logstash/outputs/stdout.rb:43:in `multi_receive_encoded'", "/app/logstash/logstash-core/lib/logstash/outputs/base.rb:90:in `multi_receive'", "/app/logstash/logstash-core/lib/logstash/output_delegator_strategies/single.rb:15:in `block in multi_receive'", "org/jruby/ext/thread/Mutex.java:148:in `synchronize'", "/app/logstash/logstash-core/lib/logstash/output_delegator_strategies/single.rb:14:in `multi_receive'", "/app/logstash/logstash-core/lib/logstash/output_delegator.rb:49:in `multi_receive'", "/app/logstash/logstash-core/lib/logstash/pipeline.rb:479:in `block in output_batch'", "org/jruby/RubyHash.java:1343:in `each'", "/app/logstash/logstash-core/lib/logstash/pipeline.rb:478:in `output_batch'", "/app/logstash/logstash-core/lib/logstash/pipeline.rb:430:in `worker_loop'", "/app/logstash/logstash-core/lib/logstash/pipeline.rb:385:in `block in start_workers'"]}
[2018-03-07T17:18:16,006][ERROR][org.logstash.Logstash ] java.lang.IllegalStateException: org.jruby.exceptions.RaiseException: (SystemExit) exit
(END)

[idangozlan]

same here. 6.2.2
[2018-03-09T04:53:09,944][FATAL][logstash.runner ] An unexpected error occurred! {:error=>#<NoMethodError: undefined method <' for nil:NilClass>, :backtrace=>["/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-elasticsearch-9.0.2-java/lib/logstash/outputs/elasticsearch/common.rb:213:inget_event_type'", "/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-elasticsearch-9.0.2-java/lib/logstash/outputs/elasticsearch/common.rb:165:in event_action_params'", "/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-elasticsearch-9.0.2-java/lib/logstash/outputs/elasticsearch/common.rb:39:inevent_action_tuple'", "/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-elasticsearch-9.0.2-java/lib/logstash/outputs/elasticsearch/common.rb:34:in block in multi_receive'", "org/jruby/RubyArray.java:2486:inmap'", "/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-elasticsearch-9.0.2-java/lib/logstash/outputs/elasticsearch/common.rb:34:in multi_receive'", "/usr/share/logstash/logstash-core/lib/logstash/output_delegator_strategies/shared.rb:13:inmulti_receive'", "/usr/share/logstash/logstash-core/lib/logstash/output_delegator.rb:49:in multi_receive'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:479:inblock in output_batch'", "org/jruby/RubyHash.java:1343:in each'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:478:inoutput_batch'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:430:in worker_loop'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:385:inblock in start_workers'"]}
[2018-03-09T04:53:10,113][ERROR][org.logstash.Logstash ] java.lang.IllegalStateException: org.jruby.exceptions.RaiseException: (SystemExit) exit